/Engine/Plugins/Interchange/Runtime/Source/FactoryNodes/Public/InterchangeCommonPipelineDataFactoryNode.h
If the unique instance doesn't exist it will return nullptr. This function should be use by the factories, to avoid creating a node.
static [UInterchangeCommonPipelineDataFactoryNode](API\Plugins\InterchangeFactoryNodes\UInterchangeCommonPipelineDataFa-) * GetUniqueInstance ( const [UInterchangeBaseNodeContainer](API\Runtime\InterchangeCore\Nodes\UInterchangeBaseNodeContainer) * NodeContainer )